Deep sleep.
Real recovery.
Goodnight.

Six bioavailable ingredients working together to support deep sleep, lower stress and help your body actually recover overnight. Nothing to hide.

Deep sleep. Real recovery. Goodnight.

Five bioavailable ingredients working together to support deep sleep, lower stress and help your body actually recover overnight. Clear ingredients. Clear purpose.

ARC hero image

The melatonin-free sleep supplement built on published science.

5 studied ingredients. Every dose on the label. Formulated by a PhD pharmacist.

Try ARC — 30 days

30-day money-back guarantee.

Built on evidence, not claims.

Formulated by a PhD pharmacist. Every milligram disclosed.

5

Active ingredients, each matched to published human research

0

Proprietary blends. Every milligram on the label.

30

Day money-back guarantee.

0 mg

of melatonin. Your body makes its own.

What ARC does for you

Four benefits. Five ingredients. One formula built to do all of it.

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Sleep quality

Apigenin has been studied for its interaction with GABA-A receptors. Magnesium contributes to normal functioning of the nervous system.* *Approved GB/EU health claim

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Stress & resilience

Ashwagandha (7% withanolides) showed a 23% reduction in morning cortisol vs placebo in a 60-day RCT. Magnesium and vitamin B6 aid normal psychological function.* *Approved GB/EU health claim

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Mental clearness

L-theanine — found naturally in green tea — has been studied for its role in alpha-wave brain activity. Vitamin B6 contributes to normal psychological function.* *Approved GB/EU health claim

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Morning readiness

Magnesium bisglycinate — chosen for its superior absorption over standard forms. Shown to contribute to the reduction of tiredness and fatigue.* *Approved GB/EU health claim

How it works The science

Formulated to synergistically work while you sleep

ARC isn't five separate ingredients in a capsule.

L-theanine and apigenin have complementary activity at GABA-A receptors. Magnesium supports the absorption of P5P, which contributes to normal psychological function.* Every ingredient was chosen for what it does alongside the others.

*Approved GB/EU health claim for vitamin B6

See how it works
ARC product
Ashwagandha (7% withanolides) Magnesium bisglycinate L-theanine Apigenin P5P — active vitamin B6

These five ingredients were formulated to work together — not just alongside each other.

Every active ingredient. Every dose. No hiding.

Couple sleeping with ARC product

ARC Neurosynergy Complex

60 capsules · 30-day supply · Take 2 capsules 30 minutes before sleep

Most popular

Subscribe & save

Delivered every 30 days. Skip or cancel anytime.

€27.99 

/mo 

Save 20% vs one-time

One-time purchase

No commitment. Buy when you need it.

€34.99

ARC Neurosynergy Complex

60 capsules · 30-day supply · Take 2 capsules 30 minutes before sleep

One-time purchase

No subscription. Backed by our 30-day guarantee.

€34.99

30-day money-back guarantee. It works or we refund you. Simple.

What people are saying

Verified buyers. Unedited.

"Three weeks in and I'm waking up before my alarm. That hasn't happened in years. It doesn't feel sedating — I just actually slept."

James R., Amsterdam · 6 weeks

"I'd tried magnesium and ashwagandha separately. Nothing. Something about ARC is different — my stress response feels more measured."

Saoirse M., Dublin · 8 weeks

"Took about 10 days. But mornings are different now — clearer. I've stopped reaching for a second coffee before 9am."

Tom K., Berlin · 5 weeks

Our standards:

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Why we built ARC

There's no shortage of supplements out there. What's harder to find is one where each ingredient is backed by research, each dose is meaningful, and you're not left taking a handful of tablets wondering if you're taking enough.

Our first product ARC is a single blend: studied ingredients, proper doses, no guesswork.

About Us

Cameron Webb

Pharmacist · PhD Pharmaceutical Sciences · Pharmaceutical Industry

Founder, NutraWebb

"[...] we set out to do something simple but well. High quality ingredients, at the doses the research supports, in active forms the body can actually use."

Founder portrait

Featured in:

Logo 1
Logo 2
Logo 3
Logo 4
Logo 5
Logo 6

Why we built ARC

There's no shortage of supplements out there. What's harder to find is one where each ingredient is backed by research, each dose is meaningful, and you're not left taking a handful of tablets wondering if you're taking enough.

Our first product ARC is a single blend: studied ingredients, proper doses, no guesswork.

About Us

Cameron Webb

Pharmacist · PhD Pharmaceutical Sciences · Pharmaceutical Industry

Founder, NutraWebb

"[...] we set out to do something simple but well. High quality ingredients, at the doses the research supports, in active forms the body can actually use."

Founder portrait

Common questions

  • How long before I notice a difference?

    It depends on the ingredient. Apigenin and L-theanine work quickly and most people notice a difference within the first few days. Magnesium and P5P build over 1–2 weeks. Ashwagandha takes 3–4 weeks to fully establish. Give ARC one complete 30-day cycle.

  • Why no melatonin?

    Melatonin tells your body what time it is — it doesn't improve how you sleep. Nightly supplementation can dampen your own production over time. ARC works differently.

  • Can I take ARC if I'm already on medication?

    Always speak to your doctor or pharmacist before taking ARC alongside prescription medication — particularly thyroid medications, immunosuppressants, or sedatives.

  • Can I take ARC during pregnancy or breastfeeding?

    We don't recommend ARC during pregnancy or breastfeeding as ashwagandha has limited safety data in pregnancy. Please speak to your doctor or pharmacist before use.

  • Are the capsules suitable for vegans?

    Yes. Our formulation is vegan-friendly from capsule to contents.